"To be part of that for anyone's wedding, anyone's special day, is an incredible moment or event," said Maj. Daniel Snoxell, a Household Cavalry soldier. "For it to be Mr. Wales, an officer I served with, that adds an extra factor."

"Mr. Wales" was just "Harry" to his fellow soldiers in this regiment when he joined in 2006. But the cavalry does much more than parade around palaces. The role of the Household Cavalry goes well beyond shiny hats on horseback.

The regiment is also an elite fighting force, serving on the front lines of Iraq and Afghanistan, where Harry served two tours. He rose to the role of captain and qualified as an Apache helicopter commander.

"He's done exactly what was expected of a British Army officer. He was courageous, a man of honor," said Cpl. Frankie O'Leary, who served as Harry's radio operator in Afghanistan.